Halogen-free flame-retardant engineering plastic granulation production line
By introducing a drive and vibration drive mechanism into the halogen-free flame-retardant engineering plastic granulation production line, and using gears and torsion springs to achieve intermittent vibration of the discharge plate, the problems of high electrical cost and low discharge efficiency of pelletizers are solved, and the dispersion and screening efficiency of plastic raw materials are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-19
- Publication Date
- 2026-03-20
AI Technical Summary
In existing halogen-free flame-retardant engineering plastic granulation production lines, the electrical cost of the pelletizer is high and the output efficiency is limited. The plastic raw material after pelletizing has poor dispersion, which affects subsequent screening processing.
The system employs a drive mechanism and a vibration drive mechanism. A single motor is used to convey, pelletize, and vibrate the discharge of halogen-free flame-retardant engineering plastic raw materials. The gear mechanism and torsion spring work together to achieve intermittent vibration of the discharge plate, thereby improving the dispersibility of the plastic raw materials.
It reduces equipment costs, improves output efficiency, and ensures that the granulated plastic raw materials are more dispersed, facilitating subsequent screening.
Smart Images
Figure CN224012737U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of halogen-free flame-retardant engineering plastics granulation production, in particular to a halogen-free flame-retardant engineering plastics granulation production line. BACKGROUND
[0002] Halogen-free flame-retardant engineering plastics are a kind of engineering plastics without halogen (such as chlorine, bromine, etc.) and with flame-retardant properties. The halogen-free flame-retardant engineering plastics granulation production line is a professional equipment for producing halogen-free flame-retardant engineering plastic particles. Its production process integrates advanced granulation technology, and can efficiently and stably produce plastic particles meeting environmental protection and performance requirements.
[0003] The existing cutting granulator in the halogen-free flame-retardant engineering plastics granulation production line uses a motor to convey halogen-free flame-retardant engineering plastic raw materials, and a gas pump drives a telescopic cylinder to realize the vertical periodic movement of the cutting knife. At the same time, the discharge plate position of the cutting granulator is fixed, and the halogen-free flame-retardant engineering plastic after cutting moves downward under the action of its own gravity.
[0004] This kind of cutting granulator in the halogen-free flame-retardant engineering plastics granulation production line has some problems. The cost of the electric appliances used is large, and the fixed position of the discharge plate limits the discharge efficiency, and the halogen-free flame-retardant engineering plastic raw materials after cutting cannot be fully dispersed. UTILITY MODEL CONTENTS
[0005] The utility model solves the technical problem of overcoming the defects of the prior art and provides a halogen-free flame-retardant engineering plastics granulation production line that can realize the conveying, cutting and discharging of halogen-free flame-retardant engineering plastic raw materials with one motor. The discharging of the halogen-free flame-retardant engineering plastic raw materials after cutting is more dispersed, which facilitates subsequent screening and processing, and can effectively solve the problems in the background art.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a halogen-free flame-retardant engineering plastics granulation production line, comprising a granulation table, a cutting knife arranged at the front end of the granulation table, a driving mechanism and a shaking driving mechanism.
[0007] Driving mechanism: arranged at the front end of the granulation table, the lower end of the driving mechanism is matched with the upper end of the cutting knife.
[0008] The shaking driving mechanism comprises a transmission shaft, a half gear, a driven gear and a rotating shaft, the rotating shaft is rotationally connected to the front end of the granulating table, the middle part of the rotating shaft is fixedly connected with a discharging plate, the transmission shaft is rotationally connected to the left end of the granulating table, the middle part of the transmission shaft is fixedly connected with the half gear, the left end of the rotating shaft is fixedly connected with the driven gear, the half gear and the driven gear are cooperatively installed, one motor can realize the conveying, granulating and discharging shaking of the halogen-free flame-retardant engineering plastic raw material, the discharging shaking makes the halogen-free flame-retardant engineering plastic after granulating more dispersed, which is convenient for subsequent screening treatment.
[0009] Further, the driving mechanism comprises a rotating rod, a connecting rod, a sliding plate and a sliding frame one, the sliding frame one is symmetrically arranged at the front end of the upper surface of the granulating table, the sliding plate is slidingly connected between the two sliding frames one, the rotating rod is rotationally connected to the upper end between the two sliding frames one, the middle part of the rotating rod is rotationally connected with the connecting rod, the lower end of the connecting rod is rotationally connected with the upper end of the sliding plate, the lower end of the sliding plate is fixedly connected with the upper end of the cutting knife, and the vertical periodic movement of the cutting knife is realized.
[0010] Further, the shaking driving mechanism further comprises a torsion spring and a limiting disc, the limiting disc is fixedly connected to the right end of the rotating shaft, the torsion spring is fixedly connected between the granulating table and the limiting disc, and the torsion spring is movably sleeved on the outer surface of the rotating shaft, so as to provide driving force for the reset of the discharging plate.
[0011] Further, the rear side of the granulating table is provided with a support, the left end of the support is provided with a controller, the input end of the controller is electrically connected with an external power supply, and the controller controls various electrical appliances.
[0012] Further, the rear end of the granulating table is rotationally connected with a fixed roller, the rear end of the upper surface of the granulating table is provided with symmetrically distributed sliding frames two, the interiors of the sliding frames two are slidingly connected with sliding seats, the two sliding seats are slidingly connected with an adaptive roller, the sliding frames two and the vertically adjacent sliding seats are fixedly connected with springs, the rear end of the right side surface of the granulating table is provided with a motor one, the left end of the output shaft of the motor one is fixedly connected with the right end of the fixed roller, the input end of the motor one is electrically connected with the output end of the controller, the left end of the fixed roller is fixedly connected with a driving belt pulley, the left end of the rotating rod is fixedly connected with a driven belt pulley two, the left end of the transmission shaft is fixedly connected with a driven belt pulley one, the driven belt pulley one and the driven belt pulley two are drivingly connected with the driving belt pulley through a transmission belt, and driving force is provided for the conveying, granulating and discharging shaking of the halogen-free flame-retardant engineering plastic raw material.
[0013] Further, the middle part of the support is provided with a screw extruder, a cooling machine is arranged between the screw extruder and the granulating table, and the input ends of the cooling machine and the screw extruder are electrically connected with the output end of the controller, so as to realize the melt molding of the halogen-free flame-retardant engineering plastic raw material.
[0014] Further, the upper end of the support is provided with a feeding bin, the lower end of the feeding bin is matched and installed with a feeding pipe of the screw extruder, a rotating column is rotationally connected in the feeding bin, a conical spiral blade is fixedly connected to the lower end of the outer surface of the rotating column, a stirring rod is fixedly connected to the upper end of the outer surface of the rotating column, a motor two is arranged at the upper end of the feeding bin, the lower end of the output shaft of the motor two is fixedly connected with the upper end of the rotating column, the input end of the motor two is electrically connected with the output end of the controller, and the stirring and mixing of the halogen-free flame-retardant engineering plastic raw material are realized.
[0015] Compared with the prior art, the beneficial effects of the present application are as follows:
[0016] 1. Under the action of the gear mechanism, the intermittent upward rotation of the discharge plate is realized, the reset of the rotated discharge plate is realized under the elastic force of the torsional spring, and finally the intermittent shaking of the discharge plate is realized, so that the halogen-free flame-retardant engineering plastic after cutting is more dispersed, and subsequent screening treatment is facilitated.
[0017] 2. One motor synchronously realizes the conveying, cutting and discharge shaking of the halogen-free flame-retardant engineering plastic raw material through a belt pulley mechanism, and the reciprocating movement of the cutting knife is realized without independent air pump driving air cylinder, so that the equipment cost is saved. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 It is a structural schematic view of the present application;
[0019] Figure 2 It is a sectional view of the internal structure of the present application;
[0020] Figure 3 It is an enlarged structural schematic view of the present application at A;
[0021] Figure 4 It is a sectional view of the right side of the granulation table of the present application.
[0022] In the figure: 1 granulation table, 2 cooling machine, 3 screw extruder, 4 support, 5 feeding bin, 6 driving mechanism, 61 rotating rod, 62 connecting rod, 63 sliding plate, 64 sliding frame one, 7 shaking driving mechanism, 71 transmission shaft, 72 one-half gear, 73 driven gear, 74 rotating shaft, 75 torsional spring, 76 limit disc, 8 discharge plate, 9 sliding frame two, 10 spring, 11 adaptive roller, 12 fixed roller, 13 motor one, 14 driving belt pulley, 15 driven belt pulley one, 16 driven belt pulley two, 17 rotating column, 18 motor two, 19 controller. DETAILED DESCRIPTION
[0023] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.
[0024] Please refer to Figures 1-4 The embodiment provides a technical scheme: a halogen-free flame-retardant engineering plastic granulation production line, which comprises a granulation table 1, the front end of the granulation table 1 is provided with a cutting knife, and further comprises a driving mechanism 6 and a shaking driving mechanism 7.
[0025] The driving mechanism 6 is arranged at the front end of the granulation table 1, the lower end of the driving mechanism 6 is matched and installed with the upper end of the cutting knife, the driving mechanism 6 comprises a rotating rod 61, a connecting rod 62, a sliding plate 63 and a sliding frame one 64, the sliding frame one 64 is symmetrically arranged at the front end of the upper surface of the granulation table 1, the sliding plate 63 is slidably connected between the two sliding frame ones 64, the upper end between the two sliding frame ones 64 is rotatably connected with the rotating rod 61, the middle part of the rotating rod 61 is rotatably connected with the connecting rod 62, the lower end of the connecting rod 62 is rotatably connected with the upper end of the sliding plate 63, and the lower end of the sliding plate 63 is fixedly connected with the upper end of the cutting knife. The driven pulley two 16 rotates to drive the rotating rod 61 to rotate, the rotating rod 61 rotates to drive the upper end of the connecting rod 62 to rotate around the center axis of the rotating rod 61, when the rotating rod 61 rotates upward, the upper end of the connecting rod 62 moves upward, thereby making the lower end of the connecting rod 62 pull the sliding plate 63 to move upward between the two sliding frame ones 64, the upward movement of the sliding plate 63 drives the upward movement of the cutting knife, when the rotating rod 61 rotates downward, the upper end of the connecting rod 62 moves downward, thereby making the lower end of the connecting rod 62 push the sliding plate 63 to move downward between the two sliding frame ones 64, the downward movement of the sliding plate 63 drives the downward movement of the cutting knife, realizing the cutting of the strip-shaped halogen-free flame-retardant engineering plastic, and realizing the continuous cutting of the strip-shaped halogen-free flame-retardant engineering plastic with the vertical periodic movement of the cutting knife.
[0026] The vibration drive mechanism 7 includes a drive shaft 71, a half-gear 72, a driven gear 73, and a rotating shaft 74. The rotating shaft 74 is rotatably connected to the front end of the granulation table 1, and a discharge plate 8 is fixedly connected to the middle of the rotating shaft 74. The drive shaft 71 is rotatably connected to the left end of the granulation table 1, and a half-gear 72 is fixedly connected to the middle of the drive shaft 71. The driven gear 73 is fixedly connected to the left end of the rotating shaft 74. The half-gear 72 and the driven gear 73 are fitted together. The vibration drive mechanism 7 also includes a torsion spring 75 and a limiting plate 76. The limiting plate 76 is fixedly connected to the right end of the rotating shaft 74, and the torsion spring 75 is fixedly connected between the granulation table 1 and the limiting plate 76. The torsion spring 75 is movably sleeved on the outer surface of the rotating shaft 74. The driven pulley 15 rotates to drive the rotation of the rotating shaft 74. The drive shaft 71 rotates, which drives the half-gear 72 to rotate. When the half-gear 72 contacts the driven gear 73, the driven gear 73 rotates, which drives the rotating shaft 74 to rotate, thereby driving the discharge plate 8 to rotate upward. The rotating shaft 74 rotates, which drives the limiting disk 76 to rotate, causing the torsion spring 75 to torsion force. When the half-gear 72 and the driven gear 73 stop contacting, the elastic force of the torsion spring 75 acts on the limiting disk 76, and the limiting disk 76 rotates in the opposite direction, driving the rotating shaft 74 to rotate downward. The rotating shaft 74 rotates downward, driving the discharge plate 8 to rotate downward. As the half-gear 72 rotates in a circular motion, the discharge plate 8 is periodically shaken, which disperses the granulated halogen-free flame-retardant engineering plastic.
[0027] Among them: a support 4 is provided on the rear side of the granulation table 1, and a controller 19 is provided on the left end of the support 4. The input terminal of the controller 19 is electrically connected to an external power supply.
[0028] The rear end of the granulating table 1 is rotationally connected with a fixed roller 12, the rear end of the upper surface of the granulating table 1 is provided with symmetrically distributed sliding frames two 9, the interiors of the sliding frames two 9 are all slidingly connected with sliding seats, an adaptive roller 11 is slidingly connected between the two sliding seats, the sliding frames two 9 and the vertically adjacent sliding seats are all fixedly connected with springs 10, the rear end of the right surface of the granulating table 1 is provided with a motor one 13, the left end of the output shaft of the motor one 13 is fixedly connected with the right end of the fixed roller 12, the input end of the motor one 13 is electrically connected with the output end of the controller 19, the left end of the fixed roller 12 is fixedly connected with a driving belt pulley 14, the left end of the rotary rod 61 is fixedly connected with a driven belt pulley two 16, the left end of the transmission shaft 71 is fixedly connected with a driven belt pulley one 15, the driven belt pulley one 15 and the driven belt pulley two 16 are all drivingly connected with the driving belt pulley 14 through transmission belts, the strip-shaped halogen-free flame-retardant engineering plastic raw material passes between the adaptive roller 11 and the fixed roller 12, the outer surface of the strip-shaped halogen-free flame-retardant engineering plastic raw material pushes the adaptive roller 11 to move upwards, the adaptive roller 11 moving upwards drives the two sliding seats to move upwards, thereby making the springs 10 all elastically compressed, thereby making the adaptive roller 11 be able to efficiently cooperate with the fixed roller 12, realizing the conveying of the strip-shaped halogen-free flame-retardant engineering plastic raw material, at the same time, the controller 19 realizes the operation of the motor one 13, the output shaft of the motor one 13 rotates to drive the fixed roller 12 to rotate, the rotation of the fixed roller 12 realizes the conveying of the strip-shaped halogen-free flame-retardant engineering plastic raw material, the rotation of the fixed roller 12 drives the driving belt pulley 14 to rotate, the driving belt pulley 14 drives the driven belt pulley one 15 and the driven belt pulley two 16 to rotate through transmission belts;
[0029] The middle part of the support 4 is provided with a screw extruder 3, the screw extruder 3 and the granulating table 1 are provided with a cooling machine 2, the input ends of the cooling machine 2 and the screw extruder 3 are all electrically connected with the output end of the controller 19, the halogen-free flame-retardant engineering plastic raw material enters the interior of the screw extruder 3, the controller 19 realizes the melting of the halogen-free flame-retardant engineering plastic raw material by the screw extruder 3, and then extrudes into a strip shape, the strip-shaped halogen-free flame-retardant engineering plastic raw material enters the cooling machine 2, the controller 19 realizes the operation of the cooling machine 2, realizing the cooling and hardening of the strip-shaped halogen-free flame-retardant engineering plastic raw material;
[0030] The upper end of the support 4 is provided with a feeding bin 5, the lower end of the feeding bin 5 is matched and installed with the feeding pipe of the screw extruder 3, the inside of the feeding bin 5 is rotationally connected with a rotating column 17, the lower end of the outer surface of the rotating column 17 is fixedly connected with a conical spiral blade, the upper end of the outer surface of the rotating column 17 is fixedly connected with a stirring rod, the upper end of the feeding bin 5 is provided with a motor two 18, the lower end of the output shaft of the motor two 18 is fixedly connected with the upper end of the rotating column 17, the input end of the motor two 18 is electrically connected with the output end of the controller 19, the motor two 18 is realized to run through the controller 19, the output shaft of the motor two 18 rotationally drives the rotating column 17 to rotate, the rotating column 17 rotationally drives the stirring frame to rotate, the stirring and mixing of the halogen-free flame-retardant engineering plastic raw materials are realized, at the same time, the rotating column 17 rotationally drives the conical spiral blade to rotate, the conical spiral blade rotationally realizes the spiral conveying of the halogen-free flame-retardant engineering plastic raw materials after mixing.
[0031] The utility model provides a kind of working principle of halogen-free flame-retardant engineering plastics granulation production line as follows: during work, personnel first places granulating table 1 and cooling machine 2 and other mechanisms stably in horizontal work area, after placing stably, personnel adds halogen-free flame-retardant engineering plastics raw materials by the feed inlet of feed bin 5, realizes motor two 18 operation by controller 19, the output shaft rotation of motor two 18 drives rotating column 17 rotation, rotating column 17 rotation drives stirring frame rotation, realizes the stirring mixing of halogen-free flame-retardant engineering plastics raw materials, while rotating column 17 rotation drives conical helical blade rotation, conical helical blade rotation realizes the helical conveying of halogen-free flame-retardant engineering plastics raw materials after mixing, and then halogen-free flame-retardant engineering plastics raw materials enter the inside of screw extruder 3, controller 19 realizes that screw extruder 3 realizes the melting of halogen-free flame-retardant engineering plastics raw materials, and then extrudes into strip, the halogen-free flame-retardant engineering plastics raw material of strip enters cooling machine 2, controller 19 realizes that cooling machine 2 operates, realizes the cooling hardening of the halogen-free flame-retardant engineering plastics raw material of strip, and then the halogen-free flame-retardant engineering plastics raw material of strip after cooling hardening reaches granulating table 1, the halogen-free flame-retardant engineering plastics raw material of strip passes between adaptive roller 11 and fixed roller 12, the outer surface of the halogen-free flame-retardant engineering plastics raw material of strip pushes adaptive roller 11 and moves up, adaptive roller 11 moves up drives two sliding seats to move up, to make spring 10 all elastic compression, to make adaptive roller 11 can be efficiently cooperated with fixed roller 12, realize the transmission of the halogen-free flame-retardant engineering plastics raw material of strip, while controller 19 realizes that motor one 13 operates, the output shaft rotation of motor one 13 drives fixed roller 12 rotation, fixed roller 12 rotation realizes the transmission of the halogen-free flame-retardant engineering plastics raw material of strip, fixed roller 12 rotation drives driving pulley 14 rotation, driving pulley 14 drives driven pulley one 15 and driven pulley two 16 rotation by transmission belt, driven pulley two 16 rotation drives rotating rod 61 rotation, rotating rod 61 rotation drives the upper end of connecting rod 62 rotation around the central axis of rotating rod 61, when rotating rod 61 rotates upwards, the upper end of connecting rod 62 follows and moves up, to make the lower end of connecting rod 62 pull sliding plate 63 and move up between two sliding frames one 64, sliding plate 63 moves up drives cutting knife to move up, when rotating rod 61 rotates downwards, the upper end of connecting rod 62 follows and moves down, to make the lower end of connecting rod 62 push sliding plate 63 and move down between two sliding frames one 64, sliding plate 63 moves down drives cutting knife to move down, realizes the granulation of the halogen-free flame-retardant engineering plastics of strip, along with cutting knife periodic vertical movement, realize the continuous granulation of the halogen-free flame-retardant engineering plastics of strip, while driven pulley one 15 rotation drives transmission shaft 71 rotation, transmission shaft 71 rotation drives half gear 72 rotation, when half gear 72 contacts with driven gear 73, driven gear 73 rotates, driven gear 73 rotation drives rotating shaft 74 rotation, to drive discharge plate 8 upwards rotation in turn, rotating shaft 74 rotation drives limit disc 76 rotation, to make torsional spring 75 hold special force, when half gear 72 and driven gear 73 end contact,The elastic force of the torsion spring 75 acts on the limiting disc 76, the limiting disc 76 reversely rotates and drives the rotating shaft 74 to rotate downward, the rotating shaft 74 rotates downward and drives the discharging plate 8 to rotate downward, with the circular motion of the half gear 72, the periodic shaking of the discharging plate 8 is realized, so that the halogen-free flame-retardant engineering plastics after granulation is dispersed and discharged.
[0032] It is worth noting that the cooling machine 2 disclosed in the above embodiment can be selected as BCY-10W, the screw extruder 3 can be selected as MYSJ-52B, and the controller 19 controls the working of the cooling machine 2, the screw extruder 3, the motor one 13 and the motor two 18, which all adopt the method commonly used in the prior art.
[0033] The above is only an embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields by using the content of the present application specification and drawings, are also included in the patent protection range of the present application.
Claims
1. A halogen-free flame-retardant engineering plastic granulation production line, comprising a granulation table (1), wherein a cutting blade is provided at the front end of the granulation table (1), characterized in that: It also includes a drive mechanism (6) and a jitter drive mechanism (7); Drive mechanism (6): It is located at the front end of the granulation table (1), and the lower end of the drive mechanism (6) is installed in conjunction with the upper end of the cutting blade. The vibration drive mechanism (7) includes a drive shaft (71), a half gear (72), a driven gear (73), and a rotating shaft (74). The rotating shaft (74) is rotatably connected to the front end of the granulation table (1). A discharge plate (8) is fixedly connected to the middle of the rotating shaft (74). The drive shaft (71) is rotatably connected to the left end of the granulation table (1). A half gear (72) is fixedly connected to the middle of the drive shaft (71). A driven gear (73) is fixedly connected to the left end of the rotating shaft (74). The half gear (72) and the driven gear (73) are fitted together.
2. The halogen-free flame-retardant engineering plastic granulation production line according to claim 1, characterized in that: The driving mechanism (6) includes a rotating rod (61), a connecting rod (62), a sliding plate (63), and a sliding frame (64). The sliding frame (64) is symmetrically arranged at the front end of the upper surface of the granulation table (1). The sliding plate (63) is slidably connected between the two sliding frames (64). The rotating rod (61) is rotatably connected to the upper end between the two sliding frames (64). The middle part of the rotating rod (61) is rotatably connected to the connecting rod (62). The lower end of the connecting rod (62) is rotatably connected to the upper end of the sliding plate (63). The lower end of the sliding plate (63) is fixedly connected to the upper end of the cutting blade.
3. The halogen-free flame-retardant engineering plastic granulation production line according to claim 1, characterized in that: The vibration drive mechanism (7) also includes a torsion spring (75) and a limiting plate (76). The limiting plate (76) is fixedly connected to the right end of the rotating shaft (74), and the torsion spring (75) is fixedly connected between the granulation table (1) and the limiting plate (76). The torsion spring (75) is movably sleeved on the outer surface of the rotating shaft (74).
4. The halogen-free flame-retardant engineering plastic granulation production line according to claim 2, characterized in that: A support (4) is provided on the rear side of the granulation table (1), and a controller (19) is provided on the left end of the support (4). The input end of the controller (19) is electrically connected to an external power source.
5. The halogen-free flame-retardant engineering plastic granulation production line according to claim 4, characterized in that: The rear end of the granulation table (1) is rotatably connected to a fixed roller (12). Symmetrically distributed sliding frames (9) are provided at the rear end of the upper surface of the granulation table (1). Sliding seats are slidably connected inside each sliding frame (9). Adaptive rollers (11) are slidably connected between two sliding seats. Springs (10) are fixedly connected between each sliding frame (9) and the vertically adjacent sliding seats. A motor (13) is provided at the rear end of the right side surface of the granulation table (1). The left end of the output shaft of the motor (13) is connected to… The right end of the fixed roller (12) is fixedly connected, the input end of the motor (13) is electrically connected to the output end of the controller (19), the left end of the fixed roller (12) is fixedly connected to the drive pulley (14), the left end of the rotating rod (61) is fixedly connected to the driven pulley (2) (16), the left end of the transmission shaft (71) is fixedly connected to the driven pulley (15), and the driven pulley (15) and the driven pulley (2) (16) are both connected to the drive pulley (14) via a transmission belt.
6. The halogen-free flame-retardant engineering plastic granulation production line according to claim 4, characterized in that: A screw extruder (3) is provided in the middle of the support (4), and a cooler (2) is provided between the screw extruder (3) and the granulation table (1). The input ends of the cooler (2) and the screw extruder (3) are electrically connected to the output end of the controller (19).
7. The halogen-free flame-retardant engineering plastic granulation production line according to claim 6, characterized in that: The upper end of the support (4) is provided with a feeding bin (5), the lower end of the feeding bin (5) is installed in conjunction with the feeding pipe of the screw extruder (3), the inside of the feeding bin (5) is rotatably connected with a rotating column (17), the lower end of the outer surface of the rotating column (17) is fixedly connected with a conical spiral blade, the upper end of the outer surface of the rotating column (17) is fixedly connected with a stirring rod, the upper end of the feeding bin (5) is provided with a second motor (18), the lower end of the output shaft of the second motor (18) is fixedly connected with the upper end of the rotating column (17), and the input end of the second motor (18) is electrically connected to the output end of the controller (19).